Exact Modeling Of Lineshape And Wavenumber Variations For Off-Axis Detectors In Fourier Transform Spectrometers (FTS) Sensor Systems

E. Niple; A. Pires; S. K. Poultney

doi:10.1117/12.934177

16 August 1983 Exact Modeling Of Lineshape And Wavenumber Variations For Off-Axis Detectors In Fourier Transform Spectrometers (FTS) Sensor Systems

E. Niple, A. Pires, S. K. Poultney

Author Affiliations +

Proceedings Volume 0364, Technologies of Cryogenically Cooled Sensors and Fourier Transform Spectrometers II; (1983) https://doi.org/10.1117/12.934177
Event: 26th Annual Technical Symposium, 1982, San Diego, United States

Abstract

The utilization of detector arrays in the focal planes of FTS sensor systems allows simultaneous spectral and spatial measurements. However, spectral lineshapes and wavenumber locations depend upon the size and location of the detector elements with respect to the Haidinger fringe pattern of the FTS sensor. These spectral distortions can be generalized as a shift and shape change of the FTS sensor lineshape. Depending on the distortions that can be tolerated, a degree of field-widening can be obtained for a given Haidinger fringe pattern. An exact model for predicting the FTS lineshape distortions is presented. The model is applied to several contemporary applications in order to quantify the magnitude of distortions to be expected.

Citation Download Citation

E. Niple, A. Pires, and S. K. Poultney "Exact Modeling Of Lineshape And Wavenumber Variations For Off-Axis Detectors In Fourier Transform Spectrometers (FTS) Sensor Systems", Proc. SPIE 0364, Technologies of Cryogenically Cooled Sensors and Fourier Transform Spectrometers II, (16 August 1983); https://doi.org/10.1117/12.934177

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